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**shahinpr**- Replies: 7

Hi,

Today my friend asked me a question.I couldn't find answer and i am not sure that there is a correct one. But he says there is.

Question:

Find a number that if you swap first and last digit you will get two times bigger number (example: 2*abcdef=fbcdea)

Do you have any idea?

Hints:

-number is 18 digit

-first digit is even number

-last digit is odd number

-only one of digits is zero

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